All books on this platform are licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). You may copy and distribute the materials in any medium or format, with appropriate credit to the authors, in their original form, and for non-commercial purposes.

本平台所有圖書均採用創用CC授權條款 CC BY-NC-ND 4.0。歡迎以任何媒介或形式自由分享、
傳播圖書內容，但僅限於非商業用途，且須註明作者姓名及保持圖書的原始形式。